ueficon.c File Reference

#include <uefildr.h>

Include dependency graph for ueficon.c:

Go to the source code of this file.

Macros
#define	CHAR_WIDTH   8
#define	CHAR_HEIGHT   16

Functions
VOID	UefiConsPutChar (int c)

Variables
EFI_SYSTEM_TABLE *	GlobalSystemTable
static unsigned	CurrentCursorX = 0
static unsigned	CurrentCursorY = 0
static unsigned	CurrentAttr = 0x0f

Macro Definition Documentation

CHAR_HEIGHT

#define CHAR_HEIGHT   16

Definition at line 11 of file ueficon.c.

CHAR_WIDTH

#define CHAR_WIDTH   8

Definition at line 10 of file ueficon.c.

Function Documentation

UefiConsPutChar()

VOID UefiConsPutChar

(

int

c

)

Definition at line 23 of file ueficon.c.

{
    ULONG Width, Height, Unused;
    BOOLEAN NeedScroll;
 
    UefiVideoGetDisplaySize(&Width, &Height, &Unused);
 
    NeedScroll = (CurrentCursorY >= Height);
    if (NeedScroll)
    {
        UefiVideoScrollUp();
        --CurrentCursorY;
    }
    if (c == '\r')
    {
        CurrentCursorX = 0;
    }
    else if (c == '\n')
    {
        CurrentCursorX = 0;
 
        if (!NeedScroll)
            ++CurrentCursorY;
    }
    else if (c == '\t')
    {
        CurrentCursorX = (CurrentCursorX + 8) & ~7;
    }
    else
    {
        UefiVideoPutChar(c, CurrentAttr, CurrentCursorX, CurrentCursorY);
        CurrentCursorX++;
    }
    if (CurrentCursorX >= Width)
    {
        CurrentCursorX = 0;
        CurrentCursorY++;
    }
}

Referenced by MachInit().

Variable Documentation

CurrentAttr

unsigned CurrentAttr = 0x0f

static

Definition at line 18 of file ueficon.c.

Referenced by UefiConsPutChar().

CurrentCursorX

unsigned CurrentCursorX = 0

static

Definition at line 16 of file ueficon.c.

Referenced by UefiConsPutChar().

CurrentCursorY

unsigned CurrentCursorY = 0

static

Definition at line 17 of file ueficon.c.

Referenced by UefiConsPutChar().

GlobalSystemTable

EFI_SYSTEM_TABLE* GlobalSystemTable

extern

Definition at line 15 of file uefildr.c.